** India's largest silver producer Hindustan Zinc HZNC.NS stock jumps 3.8% to 662.25 rupees; last up 2.2%
** HSBC upgrades to "buy" from "hold", hikes PT to 750 rupees from 520 rupees on higher zinc, silver outlook
** Brokerage sees earnings upside from spot LME zinc, silver prices amid "stable to improving" outlook
** Three-month LME zinc up 0.1% at $3,213/ton after hitting near 3-year high of $3,312/ton last week; spot silver XAG= at record $94.08/ounce MET/L GOL/
** HZNC reports Q3 results today
** Stock rated "hold" on avg by 14 analysts; median PT is 518 rupees - data compiled by LSEG
** HZNC jumped about 40% in 2025 vs Indian metal index's NIFTYMET 29.1% rise
(Reporting by Brijesh Patel in Bengaluru)
((Brijesh.Patel1@thomsonreuters.com; Ph no. +91 9590227221;))